80818400

素因数分解:

$2^5\times 5^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{409}}^1$

素因数の和:461

約数の個数: 144

約数和(自身を含む): 224204400

約数和(自身を除く): 143386000

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 25, 26, 32, 38, 40, 50, 52, 65, 76, 80, 95, 100, 104, 130, 152, 160, 190, 200, 208, 247, 260, 304, 325, 380, 400, 409, 416, 475, 494, 520, 608, 650, 760, 800, 818, 950, 988, 1040, 1235, 1300, 1520, 1636, 1900, 1976, 2045, 2080, 2470, 2600, 3040, 3272, 3800, 3952, 4090, 4940, 5200, 5317, 6175, 6544, 7600, 7771, 7904, 8180, 9880, 10225, 10400, 10634, 12350, 13088, 15200, 15542, 16360, 19760, 20450, 21268, 24700, 26585, 31084, 32720, 38855, 39520, 40900, 42536, 49400, 53170, 62168, 65440, 77710, 81800, 85072, 98800, 101023, 106340, 124336, 132925, 155420, 163600, 170144, 194275, 197600, 202046, 212680, 248672, 265850, 310840, 327200, 388550, 404092, 425360, 505115, 531700, 621680, 777100, 808184, 850720, 1010230, 1063400, 1243360, 1554200, 1616368, 2020460, 2126800, 2525575, 3108400, 3232736, 4040920, 4253600, 5051150, 6216800, 8081840, 10102300, 16163680, 20204600, 40409200, 80818400]

約数ペア:

[(1, 80818400), (2, 40409200), (4, 20204600), (5, 16163680), (8, 10102300), (10, 8081840), (13, 6216800), (16, 5051150), (19, 4253600), (20, 4040920), (25, 3232736), (26, 3108400), (32, 2525575), (38, 2126800), (40, 2020460), (50, 1616368), (52, 1554200), (65, 1243360), (76, 1063400), (80, 1010230), (95, 850720), (100, 808184), (104, 777100), (130, 621680), (152, 531700), (160, 505115), (190, 425360), (200, 404092), (208, 388550), (247, 327200), (260, 310840), (304, 265850), (325, 248672), (380, 212680), (400, 202046), (409, 197600), (416, 194275), (475, 170144), (494, 163600), (520, 155420), (608, 132925), (650, 124336), (760, 106340), (800, 101023), (818, 98800), (950, 85072), (988, 81800), (1040, 77710), (1235, 65440), (1300, 62168), (1520, 53170), (1636, 49400), (1900, 42536), (1976, 40900), (2045, 39520), (2080, 38855), (2470, 32720), (2600, 31084), (3040, 26585), (3272, 24700), (3800, 21268), (3952, 20450), (4090, 19760), (4940, 16360), (5200, 15542), (5317, 15200), (6175, 13088), (6544, 12350), (7600, 10634), (7771, 10400), (7904, 10225), (8180, 9880)]